Cylinder produced from glass fiber-reinforced resin composition

A technology of resin composition and lens barrel, which is applied in the field of lens barrel and can solve the problems of not being disclosed

Inactive Publication Date: 2010-01-13
TEIJIN KASEK KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, this publication does not disclose the characteristics required for lens barrels in cameras, lens barrels in liquid crystal projectors, and lens barrels in projection televisions, that is, good mechanical strength, appearance, fluidity, and low anisotropy. Insights on the Effectiveness of Heterogeneous Resin Compositions

Method used

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  • Cylinder produced from glass fiber-reinforced resin composition
  • Cylinder produced from glass fiber-reinforced resin composition
  • Cylinder produced from glass fiber-reinforced resin composition

Examples

Experimental program
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Effect test

Embodiment 1-14

[0186] Embodiment 1-14, comparative example 1-11

[0187] With the compounding amounts listed in Table 1-Table 2, polycarbonate resin, styrene-based resin, flat cross-section glass fiber and various additives were mixed with a blender, and then melt-mixed with a vented twin-screw extruder. refining to obtain pellets. The flat cross-section glass fiber and various additives used are pre-mixed with polycarbonate resin based on the concentration of 10-100 times the compounding amount, and then the whole is mixed with a blender. The vent type twin-screw extruder is made by Nippon Steel Works: TEX-30XSST (full meshing, same direction rotation, 2 screws). The extrusion conditions are discharge rate 20kg / h, screw rotation speed 150rpm, and vacuum degree of vent 3kPa. In addition, the extrusion temperature is set to 270°C from the first supply port to the second supply port, and 270°C from the second supply port to the second supply port. The die part is 280°C. In addition, the rei...

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Abstract

The object of the invention is to provide a cylinder produced from glass fiber-reinforced resin composition. The cylinder uses thermoplastic resin which is reinforced by glass fiber with flat cross section as substrate, and has the advantages of mechanical intensity, low aeolotropism, good fluidity and excellent appearance. The cylinder is molded by being injected with resin composition, and the resin composition contains: (i) 100 proportion by weight of resin component (A component) containing aromatic polycarbonate resin (A-1 component); (ii) 1-150 proportion by weight of fiberglass (B-1 component) with flat section, whose mean value of long diameter of fibre section is 10-50 mu m, and mean value of ratio between the long diameter and the short diameter (long diameter / short diameter) is 1.5-8; as well as (iii) 0-150 proportion by weight of reinforced filler material, which is one of plate-shaped filler material (B-2 component) and fibrous filler material (B-3 component) besides B-1 component.

Description

technical field [0001] The present invention relates to a lens barrel made of a glass fiber reinforced resin composition with improved dimensional accuracy. More specifically, it relates to a polycarbonate resin reinforced with flat cross-section glass fibers as a matrix, which has excellent mechanical strength, low anisotropy, and fluidity, and at the same time has a good appearance, and is assembled to hold optical components such as lenses, prisms, and mirrors. The lens barrel in the optical system of the component. Background technique [0002] Glass fiber-reinforced thermoplastic resins are widely used because of their excellent mechanical strength and processability. In particular, polycarbonate resins are used in various applications such as mechanical parts, automobile parts, electrical and electronic parts, and office equipment parts due to their excellent properties such as mechanical strength, dimensional stability, and flame retardancy. [0003] Conventionally,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/00C08L69/00C08K7/14B29C45/00
Inventor 池松龙介
Owner TEIJIN KASEK KK
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